package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
@Slf4j
@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    public void saveWithFlavors(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.saveWithFlavors(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    /**
     * 菜品分页查询
     *
     * @param dishPageQueryDTO
     * @return
     */
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);//后绪步骤实现
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public DishVO getByid(Long id) {
        Dish dish=dishMapper.getByid(id);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByid(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids){
            Dish dish = dishMapper.getByid(id);
            if (dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> setmeals = setmealDishMapper.getByid(ids);
        if (setmeals!=null && setmeals.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        for(Long id : ids){
            dishMapper.deleteByid(id);
            dishFlavorMapper.deleteByid(id);
        }
    }

    @Override
    public void updateDish(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //修改菜品就直接更新就可以
        dishMapper.updateDish(dish);
        //修改口味需要先删除然后在新添加
        dishFlavorMapper.deleteByid(dishDTO.getId());
        List<DishFlavor> dishFlavors = dishDTO.getFlavors();
        if (dishFlavors!=null && dishFlavors.size()>0){
            dishFlavorMapper.insertBatch(dishFlavors);
        }
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                        .id(id)
                                .status(status)
                                        .updateTime(LocalDateTime.now())
                                                .updateUser(BaseContext.getCurrentId())
                                                        .build();
        dishMapper.updateDish(dish);
        log.info("修改的菜品{}",dish);
    }

    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

    @Override
    //根据可售的状态信息和分类id存储到一个dish类然后查询菜品信息并且存储到一个集合里面带上味道信息返回
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList= dishMapper.list(dish);
        List<DishVO>dishVOs = new ArrayList<>();
        for (Dish d :dishList){
            DishVO dishVO =new DishVO();
            BeanUtils.copyProperties(d,dishVO);
            List<DishFlavor> dishflavors = dishFlavorMapper.getByid(dishVO.getId());
            dishVO.setFlavors(dishflavors);
            dishVOs.add(dishVO);
        }
        return dishVOs;
    }
}
